A mummy-style sleeping bag that actually allows you to sleep comfortably on your side or stomach, the Sierra Designs DriDown Backcountry Bed 800-Fill 3 Season Sleeping Bag is a three-season bag that’s very comfortable and spacious. Filled with the highest-quality duck down, you’re in for an awesome night of sleep when you use this option.


Fantastic Design

While traditional mummy bags are lightweight and warm, they’re tight and don’t provide much in the way of movement. If you already sleep on your back the vast majority of the time, mummy bags probably won’t bother you, but if you can’t get a good night’s rest unless you’re on your back or stomach, mummy bags aren’t exactly ideal. They make it virtually impossible to switch positions or move your legs, and usually have to be wormed their way out of.

The Sierra Designs DriDown Backcountry Bed 800-Fill 3 Season Sleeping Bag eliminates this problem entirely by providing a large opening at the top. In addition to allowing you to adjust and move as you wish, the bag is free of zippers and any other hardware. This prevents those annoying drafts and other problems zippers usually come with so you stay toasty all night long.

Another awesome component of the bag’s design is the integrated comforter. Designed to help the bag (and subsequently you) adapt to assorted temperatures, the comforter is easy to tuck beneath you so you can stay warm even if temperatures hit 15 degrees Fahrenheit. Few bags actually stand up against such frigid temperatures, but this bag definitely does. Alternatively, you can remove the comforter for warm weather snoozing.

High-Quality Down

The 800-fill-power DriDown is treated to resist water and dry faster than untreated down. While bird down sleeping bags are great in regards to warmth and comfort, they’re problematic if they get wet. Untreated down takes a long time to dry, which isn’t exactly helpful if you’re in the middle of a serious wilderness trek. This sleeping bag again takes care of this issue by utilizing a proprietary process that treats each individual duck down plume with a molecular-level polymer. In other words, the down lofts better and stays dryer for much longer than its untreated counterpart. So forget the days of cold, clumpy, wet bird down sleeping bags. This option certainly leaves such problems in the past.

Reasonable Weight

The regular version of this bag is 3 pounds, while the long version is 3.5 pounds. A reasonable weight if you’re planning a serious hiking trip, the sleeping bag comes with a stuff sack. However, the resulting stuff size– 8.5 x 16 inches (regular) and 9 x 17 inches (long) makes the bag a bit problematic for hiking. It is therefore recommended as a fantastic camping bag, and perfect for sleeping in the back of your car or truck bed in addition to a tent.

Great Features

While the this hight quality sleeping bag doesn’t come with a lot of extra features, the ones it does have are pretty cool. It includes insulated hand and arm pockets for keeping extra warm on chilly nights, as well as a foot box slit. This box makes clammy feet a thing of the past, and is regularly reviewed as “outstanding.” There’s also an optional sleeping pad. The pad may not come with the bag, however it slips easily into the sleeping pad sleeve to offer the “bed” experience.


A three-season bag that definitely lives up to the hype, attempting to find a poor review of this product is challenging. Use it on any and all camping trips and enjoy restful nights of sleep.

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Review of Sierra Designs DriDown Backcountry Bed 800-Fill 3 Season Sleeping Bag
4.3 Overall
  • 800 Fill DriDown - Nice and Warm Bag
  • Versatile integrated comforter wraps allows you to easily adjust to varying temperatures
  • Insulated Hand/Arm Pockets provide insulation under your arms when comforter is used outside of the bag
  • Sleeping pad sleeve secures your sleeping pad to create the experience of a fully integrated bed
  • Catenary shaped opening is smaller than bag width so when you push out, the walls push in to seal out drafts

If you tend to loose sleep camping because your body sleeps on the cold side, this is by far the best bag I could recommend for you. This bag has everything you need to stay warm, comfortable throught the nights on your next outdoor adventure. Imagine - no more sleeping bag zipper poking you in the face ever again. This bag will keep you warn, on your sleeping bag all without a single zipper. Don't forget about the foot vents - what a great way to cool off and be even more comfortable at night.

Regular Weight: 2 pounds 8 ounces
Long Weight: 2 pounds 11 ounces
Temperature Rating: 20 Degrees Fahrenheit
Regular Size: 3 x 61 x 72 inches
Long Size: 3 x 65 x 78 inches
Fill 800 Fill DriDown
Temperature Rating